CHARLES DE TEMPLE, A MODERNIST GOLD RING, 1978 in 18ct white gold, the undulating ring in abstract design, accented by beaded detailing, C de T maker's mark, full British hallmarks for London 1978, size J1/2 / 5, 7.7g. 

Estimate £800 - £1,200

CHARLES DE TEMPLE, A MODERNIST GOLD RING, 1979 in 18ct yellow gold, in abstract design, full British hallmarks for London 1979, size M / 6.25, 3.2g. 

Estimate £300 - £500

CARTIER, A DIAMOND LOVE RING punctuated by six screw head motifs, three set with round brilliant cut diamonds, signed Cartier and numbered, stamped 750, Cartier size 51, size K1/2, 8.2g. 

Estimate £1,500 - £2,000

AN INDIAN RUBY, DIAMOND AND ENAMEL FLOWER RING in yellow gold, designed as a flower, set with an old cut diamond measuring 8.0mm x 7.23mm in a cluster of cabochon rubies, the band decorated all around with foliate motifs in red, green and white ename

Estimate £4,000 - £6,000

CARTIER, A GOLD TRINITY RING in 18ct tricolour gold, comprising three interlocking tricolour gold bands, signed Cartier and numbered, Swiss assay marks, size K / 5.25, 4.8g.

Estimate £300 - £500

AN AQUAMARINE AND DIAMOND RING set with an octagonal step cut aquamarine of approximately 6.59 carats, the stepped shoulders set with round brilliant cut diamonds, stamped 18CT, size P / 7.75, 7.3g. 

Estimate £800 - £1,200

TIFFANY & CO., A SOLITAIRE DIAMOND RING set with a princess cut diamond of 0.51 carats, inscribed 0.51CT, signed Tiffany & Co. and numbered, stamped PT950, size L / 5.75, 4.3g. Accompanied by a Tiffany & Co. jewellery box. 

Estimate £1,800 - £2,600

CHOPARD, A DIAMOND HAPPY DIAMONDS ICONS RING in 18ct white gold, the round white sapphire locket with three free moving round brilliant cut diamonds in a border of round brilliant cut diamonds, the shoulders set with further diamonds, signed Chopard

Estimate £800 - £1,200

CARTIER, A DIAMOND LOVE RING the band with six screw head motifs set with round brilliant cut diamonds, signed Cartier and numbered, stamped 750, Cartier size 51, size K1/2 / 5.5, 8.0g. Accompanied by a Cartier certificate of authenticity. 

Estimate £2,000 - £3,000

A DIAMOND AND ENAMEL EGG DRESS RING in yellow gold, the oval face decorated with red guilloche enamel, set with a cluster of round brilliant and single cut diamonds, stamped 750 875, size M1/2 / 6.5, 9.5g. 

Estimate £800 - £1,200

BULGARI, A SERPENTI VIPER RING in 18ct yellow gold, designed as a coiled snake, accented by round brilliant cut diamonds, signed Bvlgari and numbered, Italian assay marks, approximately size P1/2 / 8, 7.6g. Accompanied by Bulgari box and outer box, t

Estimate £2,000 - £3,000

LOT WITHDRAWN.

Estimate £10 - £20

BOODLES, A PERIDOT AND DIAMOND RING set with a princess cut peridot in a border of round brilliant cut diamonds, the stepped shoulders set with further diamonds, signed Boodles, marked indistinctly, size O1/2 / 7.5, 6.4g. 

Estimate £800 - £1,200

HARLE PARIS, A PINK TOURMALINE AND DIAMOND RING in platinum, set with a cushion cut pink tourmaline of 1.34 carats accented on each side by a round brilliant cut diamond, inscribed 1.34ct d2-0.054ct, Harle Paris maker's mark, partial British hallmark

Estimate £500 - £700

AN ORANGE SAPPHIRE AND DIAMOND RING set with a cushion cut orange sapphire of approximately 7.15 carats in a border of round brilliant and baguette cut diamonds, stamped 750, size M1/2 / 6.5, 6.2g. 

Estimate £2,000 - £3,000

CHARLES DE TEMPLE, A MODERNIST GOLD RING, CIRCA 1970 in 18ct yellow gold, in abstract design, signed C de T, stamped 18CT, size K1/2 / 5.5, 6.1g. 

Estimate £600 - £800

BULGARI, AN ANCIENT COIN MONETE RING in 18ct yellow gold, the fluted ring set with a coin depicting Roman Emperor Denario Adriano 117-138 d.c., signed Bulgari, Italian assay marks, stamped 750, size N1/2 / 7, 19.5g. 

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND THREE STONE RING set with an oval cut sapphire of approximately 1.34 carats accented on each side by a round brilliant cut diamond, the shoulders set with round cut diamonds, no assay marks, size N1/2 / 7, 5.0g. 

Estimate £600 - £800

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 3.53 carats in a double cluster of round brilliant cut diamonds, accented by oval and marquise round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 5.6g. 

Estimate £2,500 - £3,500

A ZAMBIAN MINOR EMERALD AND DIAMOND RING set with a pear cut emerald of 13.46 carats, the shoulders set with round brilliant cut diamonds, stamped 750, size J1/2 / 5, 6.3g. Accompanied by a gemmologial report stating the emerald is of Zambian origin

Estimate £8,000 - £12,000

CHRISTOFFEL, A PAIR OF PINK TOURMALINE HOOP EARRINGS in 18ct yellow gold and steel, each designed as a modular hoop set with an oval cabochon pink tourmaline, signed Christoffel, French import marks, stamped 750, stamped Acciaio Foro, 2.1cm, 27.5g. 

Estimate £1,200 - £1,600

A DIAMOND, YELLOW DIAMOND AND EMERALD CALLA LILY DRESS RING designed as a calla lily pave set with round brilliant cut white and yellow diamonds, the band accented by round cut emeralds, EH maker's marks, no assay marks, size L / 5.75, 22.5g. 

Estimate £3,000 - £5,000

A THREE STONE RUBY AND DIAMOND RING in 18ct white gold, set with an oval cut ruby of approximately 1.89 carats, accented on each side by a pear cut diamond, partial British hallmarks, stamped 750, size M1/2 / 6.5, 3.8g. 

Estimate £800 - £1,200

BULGARI, A RUBY AND DIAMOND RING in 18ct yellow gold, set with round cut rubies and round brilliant cut diamonds, signed Bulgari, Italian assay marks, stamped 750, size Q1/2 / 8.5, 10.6g.

Estimate £2,500 - £3,500

AN ART DECO SOLITAIRE DIAMOND RING set with an old European cut diamond of approximately 0.83 carats, the shoulders set with trios of single cut diamonds, no assay marks, size N / 6.75, 3.1g. 

Estimate £500 - £700

BULGARI, A RUBY AND DIAMOND RING in 18ct white gold, set with an oval cut ruby of 1.15 carats accented by pave set round brilliant cut diamonds, inscribed 1.15cts, signed Bulgari, Italian assay marks, stamped 750, size O1/2 / 7.5, 6.4g. 

Estimate £3,000 - £5,000

A SAPPHIRE AND DIAMOND BALLERINA RING set with an oval cut sapphire of approximately 3.90 carats in an undulating border of tapered baguette cut diamonds, no assay marks, size L1/2 / 6, 10.0g. 

Estimate £5,500 - £6,500

CARTIER, A DIAMOND LOVE RING in 18ct white gold, the band punctuated by eight screw head motifs, one set with a round brilliant cut diamond, signed Cartier and numbered, Italian assay marks, stamped 750, Cartier size 48, size I / 4.25, 4.1g. Accompan

Estimate £1,200 - £1,600

VAN CLEEF & ARPELS, A DIAMOND PHILIPPINES RING in 18ct yellow gold, pave set with a section of round cut diamonds, signed VCA and numbered, stamped 750, size F1/2 / 3, 8.8g. 

Estimate £2,500 - £3,500

AN EMERALD AND DIAMOND DRESS RING set with three round cut emeralds in a border of single cut diamonds, the emeralds all totalling approximately 1.3-1.5 carats, Portuguese assay marks, size O / 7.25, 8.5g.

Estimate £2,000 - £3,000

A HESSONITE GARNET AND DIAMOND RING set with a cushion cut hessonite garnet of approximately 5.95 carats in a border of round brilliant cut diamonds, accented by princess cut diamonds, the band set with further diamonds, stamped PT950, size M / 6.25,

Estimate £2,000 - £3,000

CHANEL, A CAMÉLIA AJOURÉ DIAMOND RING in 18ct white gold, designed as a wide openwork band of camellia flower motifs, bordered with round brilliant cut diamonds, signed Chanel and numbered, stamped 750, French assay marks, Chanel size 54, size N / 6.

Estimate £1,800 - £2,600

A YELLOW SAPPHIRE AND DIAMOND HALO RING in platinum, set with an oval cut yellow sapphire of 1.71 carats in a border of round brilliant cut diamonds, the band set with further diamonds, inscribed 1.71ct 0.63ct, partial British hallmarks, size M / 6.2

Estimate £1,500 - £2,000

DE GRISOGONO, A JIYA RING in 18ct yellow gold, the articulated ring in bombe design, comprising one gold band and six black lacquered carbon fiber bands, signed de Grisogono and numbered, Swiss assay marks, stamped AU 750, size M / 6.25, 26.7g. Accom

Estimate £2,000 - £3,000

MARINA B, A GREEN TOURMALINE RING set with an oval cabochon green tourmaline, signed Marina B and numbered, stamped 750, stamped Or et Acier, size K / 5.25, 20.1g. 

Estimate £2,500 - £3,500

A PAIR OF E COLOUR DIAMOND STUD EARRINGS in platinum, each set with a round brilliant cut diamond of 0.50 carats, full British hallmarks, 0.5cm, 2.2g. Accompanied by two GIA reports stating that the diamonds are E colour and VVS1 clarity.

Estimate £2,000 - £3,000

A GREEN TOURMALINE AND DIAMOND THREE STONE RING set with a mixed cut green tourmaline of 2.20 carats between two round brilliant cut diamonds, inscribed 2.20ct / 0.29ct, stamped PT950, size M / 6.25, 6.0g. 

Estimate £800 - £1,200

CHAUMET, A DIAMOND BAND RING the band punctuated by round brilliant cut diamonds, signed Chaumet and numbered, French maker's mark, French assay marks, stamped 750, size L / 5.75, 6.8g. 

Estimate £1,000 - £1,500

AN EMERALD AND DIAMOND DRESS RING set with an oval cut emerald in a pierced border set with round brilliant cut diamonds, the shoulders set with further diamonds, stamped PLAT, size M1/2 / 6.5, 4.8g. 

Estimate £600 - £800

A RUBY RING set with a cushion cut ruby of approximately 1.36 carats, stamped 750, size K / 5.25, 2.0g. 

Estimate £500 - £700

CARTIER, A NOUVELLE VAGUE RING in 18ct white gold, comprising two interlocking bands, signed Cartier and numbered, stamped 1991, French import marks, stamped 750, Cartier size 49, size J / 4.75, 14.4g.

Estimate £1,800 - £2,600

A SAPPHIRE AND DIAMOND HALO RING in platinum, set with an oval cut sapphire of 1.18 carats in a border of round brilliant cut diamonds, the band set with further diamonds, inscribed 1.18ct 0.22ct, partial British hallmarks, size M / 6.25, 3.9g. 

Estimate £1,200 - £1,600

BULGARI, A DIAMOND SERPENTI VIPER RING in 18ct rose gold, designed as a coiled snake set throughout with round brilliant cut diamonds, signed Bulgari and numbered, Italian assay marks, stamped Au750, Bulgari size XXL, size adjustable, 12.4g. Accompan

Estimate £7,000 - £9,000

A TOURMALINE AND DIAMOND DRESS RING in platinum, set with an oval cut yellowish-green tourmaline of 2.47 carats in a cluster of round brilliant and baguette diamonds, inscribed 2.47ct 0.93ct, partial British hallmarks, size M / 6.25, 6.8g. 

Estimate £1,500 - £2,000

SCHLUMBERGER STUDIOS FOR TIFFANY & CO., A DIAMOND VIGNE RING the openwork ring in foliate design, set throughout with round brilliant and marquise cut diamonds, the diamonds totalling 2.5-2.7 carats, signed Schlumberger Studios, signed Tiffany & Co.,

Estimate £8,000 - £12,000

AN AQUAMARINE AND DIAMOND RING set with an oval cut aquamarine of approximately 7.97 carats in a border of round brilliant cut diamonds, the bifurcated shoulders set with further diamonds, stamped 750, size L1/2 / 6, 5.6g. 

Estimate £1,200 - £1,600

AN OPAL, RUBY AND DIAMOND DRESS RING set with a marquise cabochon opal in a cluster or round brilliant cut diamonds, accented by two octagonal step cut rubies, inscribed 9.688ct 0.44ct d0.483ct, stamped AU750, size N / 6.75, 6.8g. 

Estimate £1,200 - £1,600

MELLERIO, A DIAMOND BOMBE RING set with a round brilliant cut diamond of approximately 2.01 carats on a domed ring pave set with round brilliant cut diamonds, signed Mellerio and numbered, French assay marks, size M / 6.25, 11.8g. 

Estimate £7,000 - £9,000

A YELLOW SAPPHIRE AND DIAMOND DRESS RING set with an octagonal step cut yellow sapphire of approximately 1.70 carats, the stepped shoulders set with round cut diamonds, stamped PLAT, size N / 6.75, 4.8g.  

Estimate £500 - £700

VAN CLEEF & ARPELS, A VINTAGE DIAMOND AND ENAMEL DRESS RING in 18ct yellow gold, pave set with round brilliant cut diamonds, the shoulders decorated with black enamel, inscribed 1CT0.9, signed Van Cleef & Arpels and numbered, French assay marks, stam

Estimate £5,000 - £7,000

A PINK TOURMALINE AND DIAMOND RING in platinum, set with a round cut pink tourmaline of 1.90 carats in a double halo of round brilliant cut diamonds, the band set with further diamonds, inscribed 1.90ct / 0.65ct, partial British hallmarks, size N / 6

Estimate £1,200 - £1,600

BOUCHERON, A DIAMOND QUATRE RADIANT RING in 18ct yellow gold, the wide textured band accented by a row of round brilliant cut diamonds, signed Boucheron and numbered, Swiss assay marks, stamped Au 750, size Q1/2, 8.5, 16.6g. 

Estimate £3,000 - £5,000

A PEARL AND DIAMOND CLUSTER RING set with a pearl of 7.5mm in a cluster of round brilliant cut diamonds, the diamonds totalling 1.4-1.6 carats, stamped 18CT, size K / 5.25, 7.5g. 

Estimate £1,500 - £2,000

BULGARI, AN EMERALD AND DIAMOND THREE STONE RING in platinum, set with a round cut emerald accented on each side by a round brilliant cut diamond, signed Bulgari, Italian assay marks, stamped 950, size M / 6.25, 18.9g. 

Estimate £3,000 - £5,000

A RUBY SNAKE RING in 18ct yellow gold, designed as a coiled snake, the head set with a round cut ruby, T&S maker's mark, partially obscured full British hallmarks, size S / 9.25, 9.7g. 

Estimate £600 - £800

A BURMA NO HEAT RUBY AND YELLOW DIAMOND CLUSTER RING set with a pear cut ruby of 2.09 carats in a cluster of round brilliant cut yellow diamonds, stamped 750, size M / 6.25, 6.0g. Accompanied by a facsimile gemmological report stating that the ruby i

Estimate £1,500 - £2,500

VAN CLEEF & ARPELS, A FINE DIAMOND CLUSTER RING set with a round brilliant cut diamond of 2.08 carats in a cluster of further round brilliant cut diamonds, the diamonds all totalling 3.8-4.0 carats, signed Van Cleef & Arpels and numbered, no assay ma

Estimate £20,000 - £30,000

A CHINESE JADEITE JADE DRESS RING in yellow gold, set with an oval cabochon jadeite jade of approximately 10.72 carats, Chinese assay marks, size L1/2 / 6, 10.6g. 

Estimate £1,000 - £1,500

A TANZANITE AND DIAMOND CLUSTER RING in 18ct white gold, set with a trillion cut tanzanite of 3.17 carats in a cluster of round brilliant cut diamonds, inscribed 3.17ct, full British hallmarks, size L / 5.75, 6.8g. 

Estimate £1,200 - £1,600

BULGARI, A CITRINE TUBOGAS SERPENTI RING in 18ct yellow gold, the spiral ring accented by a pear cut citrine, signed Bulgari, Italian assay marks, size O1/2 / 7.5, 17.8g. 

Estimate £2,000 - £3,000

MICHAEL WEGGENMANN, A FANCY COLOUR DIAMOND BAND RING set all around with a row of round brilliant cut champagne diamonds, Michael Weggenmann maker's mark, stamped AU750, size Q / 8.25, 11.5g. 

Estimate £1,200 - £1,600

A SAPPHIRE AND DIAMOND HALO RING set with an oval cut sapphire of approximately 1.40 carats in a border of round brilliant cut diamonds, the band set with further diamonds, stamped 750, size N1/2 / 7, 3.8g. 

Estimate £700 - £900

A WATERMELON TOURMALINE AND DIAMOND RING set with an octagonal step cut watermelon tourmaline of approximately 29.29 carats in a border of round brilliant cut diamonds, the shoulders set with further diamonds, the diamonds all totalling 1.6-1.7 carat

Estimate £6,000 - £8,000

AN AMETHYST AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut amethyst of 2.11 carats in a cluster of round brilliant cut diamonds, inscribed 2.11ct 0.74ct, full British hallmarks, size M / 6.25, 6.7g. 

Estimate £1,200 - £1,600

ALEXIS NY, A TITANIUM AND DIAMOND FLOWER RING designed as a flower accented by rows of round brilliant cut diamonds, inscribed 0.41ct, signed Alexis NY and numbered, size L / 5.75, 4.2g. 

Estimate £1,500 - £2,500

A CHALCEDONY, TSAVORITE GARNET AND DIAMOND COCKTAIL RING set with an oval rose cut green chalcedony in a border of round cut tsavorite garnets and round cut diamonds, no assay marks, size M1/2 / 6.5, 19.3g. 

Estimate £250 - £350

PALOMA PICASSO FOR TIFFANY & CO., A DOUBLE LOVING HEART RING designed as two hearts in a stylised infinity motif, signed Paloma Picasso, signed T&Co., stamped 750, size N / 6.75, 8.8g. 

Estimate £700 - £900

A DIAMOND AND SAPPHIRE TARGET RING set with a round cut diamond of approximately 0.62 carats in a border of French cut sapphires, the shoulders set with further diamonds, stamped 750, size M1/2 / 6.5, 3.3g. 

Estimate £800 - £1,200

A DIAMOND RING set with a fancy cut diamond of 1.59 carats, surrounded by a cluster of round cut diamonds, stamped 14K, size N / 6.75, 2.6g. 

Estimate £400 - £600

NO RESERVE - AN ANTIQUE DIAMOND THREE STONE RING set with a row of three old cut diamonds, stamped PLAT 18K, size L1/2 / 6, 3.3g. 

Estimate £250 - £350

A CITRINE AND DIAMOND COCKTAIL RING set with an oval cut citrine of approximately 19.80 carats in a cluster of round brilliant cut diamonds, accented by further diamonds, the diamonds all totalling 2.0-2.2 carats, no assay marks, size Q / 8, 20.3g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND DRESS RING set with an oval cut ruby in a cluster of round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 3.0g. 

Estimate £450 - £650

AN EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of approximately 1.91 carats in a cluster of oval brilliant cut diamonds, the shoulders set with round brilliant cut diamonds, stamped 18K, size M1/2 / 6.5, 5.0g. 

Estimate £4,000 - £6,000

TIFFANY & CO., A DIAMOND VICTORIA RING in 18ct white gold and platinum, the open band set with floral clusters of marquise cut diamonds, within borders of round brilliant cut diamonds, signed T & Co., full British hallmarks, stamped PT950, size J1/2

Estimate £10,000 - £15,000

A SOLITAIRE DIAMOND ENGAGEMENT RING AND WEDDING BAND in 18ct white gold, the engagement ring set with a round brilliant cut diamond of approximately 0.35 carats, the trifurcated band set with further round brilliant cut diamonds, the fitted wedding b

Estimate £600 - £800

AN ITALIAN CORAL CORNICELLO RING in 18ct yellow gold, the ring suspending a chain terminating with a fluted cornicello pendant accented by a cabochon coral, Italian assay marks, size P / 7.75, 16.8g. 

Estimate £1,200 - £1,600

A HELIODOR AND DIAMOND RING in platinum, set with a round cut heliodor (yellow beryl) of 5.32 carats, the band set with round brilliant cut diamonds, inscribed 5.32, partial British hallmarks, size N1/2 / 7, 9.2g. 

Estimate £1,500 - £2,000

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 3.03 carats accented by round brilliant cut diamonds, stamped PLAT, size R / 8.75, 5.0g.

Estimate £800 - £1,200

AN AMETHYST RING set with an oval cabochon amethyst on a satin finish band, stamped 18K, size M1/2 / 6.5, 2.5g. 

Estimate £300 - £500

A COGNAC DIAMOND RING set with a marquise cut cognac diamond of approximately 0.60 carats, the shoulders set with round brilliant cut diamonds, stamped 14Kt, size N / 6.75, 2.4g. Accompanied by a gemmological report stating that the diamond is natura

Estimate £300 - £500

AN AQUAMARINE AND DIAMOND RING set with a carved aquamarine in a border of round cut diamonds, no assay marks, size L1/2 / 6, 23.0g. 

Estimate £400 - £600

AN AQUAMARINE AND DIAMOND RING set with a square step cut aquamarine in a border of round brilliant cut diamonds, the shoulders set with baguette cut diamonds, stamped PLAT, size M1/2 / 6.5, 3.7g. 

Estimate £500 - £700

A SOLITAIRE DIAMOND RING in 18ct white gold, set with a round brilliant cut diamond of 0.34 carats, the shoulders set with further round brilliant cut diamonds, partial British hallmarks, stamped 750, size M1/2 / 6.5, 2.2g. 

Estimate £450 - £650

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire in a cluster of round brilliant cut diamond, no assay marks, M / 6.25, 6.6g. 

Estimate £250 - £350

HANS HANSEN FOR GEORG JENSEN, A GOLD BAND RING in 18ct yellow and white gold, signed Georg Jensen, signed Hans Hansen, British import marks, stamped 750, size M1/2 / 6.5, 5.9g. Accompanied by a Georg Jensen jewellery box. 

Estimate £200 - £300

A SAPPHIRE AND DIAMOND RING in platinum, set with a round cut sapphire of approximately 2.03 carats, the stepped shoulders set with baguette cut diamonds, partial British hallmarks, stamped PT950, size L1/2 / 6, 6.6g. 

Estimate £800 - £1,200

AN AMETHYST DRESS RING set to the centre with a round cabochon amethyst within a hinged circular border, engraved Tallah, stamped 750, size K1/2 / 5.5, 13.3g. 

Estimate £1,200 - £1,600

A TANZANITE AND DIAMOND CLUSTER RING in platinum, set with an oval cut tanzanite of approximately 2.37 carats in a cluster of round brilliant cut diamonds, partial British hallmarks, size L / 5.75, 7.5g. 

Estimate £1,500 - £2,000

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 0.09 carats, full British hallmarks, stamped PT950, size H1/2 / 4, 3.9g. 

Estimate £100 - £150

A GREEN SAPPHIRE AND DIAMOND THREE STONE RING set with an octagonal step cut green tourmaline of 1.51 carats between two octagonal step cut diamonds, inscribed 1.51 0.63, full British hallmarks, size L1/2 / 6, 6.4g. 

Estimate £2,000 - £3,000

A PINK SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an octagonal step cut pink sapphire of 1.29 carats in cluster of round brilliant cut diamonds, inscribed 1.29ct 1.04ct, full British hallmarks, size M / 6.25, 5.9g. 

Estimate £1,800 - £2,200

A PORTUGUESE EMERALD AND DIAMOND BOMBE RING in platinum, set with an octagonal step cut emerald, the bombe face pierced in scalloped design and set with round cut diamonds, Portuguese assay marks, size L1/2 / 6, 5.0g. 

Estimate £1,500 - £2,500

A DIAMOND HALF ETERNITY RING in platinum, half set with a row of round brilliant cut diamonds, partial British hallmarks, stamped PT950, size M / 6.25, 3.1g. 

Estimate £200 - £300

BULGARI, A B.ZERO 1 RING in 18ct yellow gold, the band with engraved lettering 'BVLGARI' to the sides, signed Bulgari, Italian assay marks, stamped 750, size O1/2 / 7.5, 10.0g. Accompanied by a Bulgari jewellery box. 

Estimate £1,500 - £2,000

A PINK TOURMALINE AND DIAMOND RING set with an octagonal step cut pink tourmaline of approximately 4.14 carats, the shoulders set with princess cut diamonds, stamped 750, size N / 6.75, 5.1g. 

Estimate £1,000 - £1,500

A SAPPHIRE, RUBY, DIAMOND AND PEARL CROWN RING designed as a crown set with round brilliant cut diamonds accented by square step cut and pear cut sapphires, round cut rubies and a pearl, stamped 750 18K, size R / 8.75, 7.1g. 

Estimate £600 - £800

TIFFANY & CO., A GOLD BAND RING in 18ct yellow gold, comprising a wide band, signed Tiffany & Co., full British hallmarks, stamped 750, size S / 9.25, 10.6g. 

Estimate £800 - £1,200

A TSAVORITE GARNET AND DIAMOND CLUSTER RING in platinum, set with an oval cut tsavorite garnet of 1.55 carats in a cluster of round brilliant cut diamonds, inscribed 1.55 0.47, partial British hallmarks, size M / 6.25, 6.1g. 

Estimate £1,500 - £2,000

A DIAMOND DRESS RING set with three clusters of round brilliant and baguette cut diamonds, stamped 750, size N / 6.75, 5.0g. 

Estimate £1,200 - £1,600